CN103364750A - Auxiliary device for calibration of oscilloscope and calibration method - Google Patents

Auxiliary device for calibration of oscilloscope and calibration method Download PDF

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Publication number
CN103364750A
CN103364750A CN2013102611490A CN201310261149A CN103364750A CN 103364750 A CN103364750 A CN 103364750A CN 2013102611490 A CN2013102611490 A CN 2013102611490A CN 201310261149 A CN201310261149 A CN 201310261149A CN 103364750 A CN103364750 A CN 103364750A
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CN
China
Prior art keywords
calibration
probe
oscilloprobe
oscilloscope
linkage unit
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Pending
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CN2013102611490A
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Chinese (zh)
Inventor
李华
张迎华
程鹏飞
邓建廷
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Dawning Information Industry Beijing Co Ltd
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Dawning Information Industry Beijing Co Ltd
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Priority to CN2013102611490A priority Critical patent/CN103364750A/en
Publication of CN103364750A publication Critical patent/CN103364750A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an auxiliary device for the calibration of an oscilloscope. The device comprises a BNC (bayonet nut connector) joint (10), a connecting wire (20) and a probe connecting unit (30), wherein the BNC joint (10) is connected with an oscilloscope probe calibration BNC joint; the probe connecting unit (30) is connected with an oscilloscope probe; and the BNC joint (10) is connected with the probe connecting unit (30) through the connecting wire (20). The invention also provides a calibration method for calibrating the oscilloscope by utilizing the auxiliary device. According to the auxiliary device for the calibration of the oscilloscope and the calibration method, the oscilloscope probe can be tightly connected with an oscilloscope probe calibration port, so that a probe calibration failure caused by poor contact resulted from the hand tremble of a worker and the like in a probe calibration process is avoided.

Description

A kind of Oscilloscope Calibration servicing unit and calibration steps
Technical field
The present invention relates to a kind of alignment aid, relate to particularly a kind of alignment aid that is applied in the oscilloprobe calibration.The invention still further relates to a kind of Oscilloscope Calibration method.
Background technology
Oscillograph all is provided with probe calibration port (Probe Calibration) at present, need to be connected by a mode that adopts the some contact between probe sensing point to be calibrated and the probe correction port during calibration, with the sensing point of oscilloprobe with after the CRO coupling calibration port is connected, the calibration of popping one's head in of operation probe calibration procedure.
In whole calibration process, need the some contact connection by the sensing point of manually keeping probe and the calibration port of be connected, keeping the interconnected state of the two, but little because of the contact area of the two, easily loose contact, it is lower to cause the unsuccessful or probe of probe calibration to be calibrated to power.
Summary of the invention
Be calibrated to the lower problem of power for solving in the oscilloprobe calibration process the unsuccessful or probe of the calibration that causes because of the sensing point of probe and the loose contact of probe calibration port, designed a kind of Oscilloscope Calibration servicing unit.
The objective of the invention is to be achieved through the following technical solutions:
A kind of Oscilloscope Calibration servicing unit comprises bnc interface, connecting line and probe linkage unit; Wherein,
Bnc interface is used for being connected with the bnc interface of oscilloprobe calibration port;
The probe linkage unit is used for being connected with oscilloprobe;
Connecting line connects bnc interface and probe linkage unit.
More preferably, described probe linkage unit adopts bipod contact pin, bipod jack or a pin contact pin to add a pin jack.
More preferably, described connecting line is comprised of ground wire and signal wire.
More preferably, the peripheral metal mesh shield that adopts of described connecting line is processed.
Another aspect the invention provides a kind of Oscilloscope Calibration method of utilizing foregoing alignment aid, comprises the steps:
Oscilloprobe to be calibrated is accessed oscillographic respective channel;
With the Oscilloscope Calibration servicing unit oscilloprobe calibration port is connected with the probe of being connected, wherein bnc interface is used for being connected with the bnc interface of oscilloprobe calibration port, and the probe linkage unit is used for being connected with oscilloprobe;
Carry out oscillographic probe calibration procedure.
More preferably, before this calibration steps also is included in and carries out oscillographic probe calibration procedure, type of calibration and the attenuation parameter of the probe of access respective channel is configured.
More preferably, this calibration steps according to the path loss values of alignment aid, carries out the signal path loss balancing before also being included in and carrying out oscillographic probe calibration procedure.
The invention provides a kind of Oscilloscope Calibration servicing unit and method, by Oscilloscope Calibration servicing unit provided by the invention and method, oscilloprobe closely is connected with oscillographic probe calibration port, has avoided calibrating unsuccessfully because personnel hand shake etc. comes in contact the bad probe that causes in the probe calibration process.
Description of drawings
Fig. 1 is the synoptic diagram of alignment aid;
Fig. 2 be alignment aid with the Oscilloscope Calibration connection diagram;
Fig. 3 is one of the embodiment of linkage unit that pops one's head in;
Fig. 4 for the probe linkage unit embodiment two;
Fig. 5 for the probe linkage unit embodiment three;
Fig. 6 is the calibration steps process flow diagram that utilizes alignment aid.
Embodiment
As shown in Figure 1, Oscilloscope Calibration servicing unit of the present invention comprises BNC(Bayonet Nut Connector, bayonet nut connector) interface 10, connecting line 20 and the linkage unit 30 of popping one's head in.
As shown in Figure 2, the BNC seat end that the calibration port of common oscilloprobe adopts, for making things convenient for the transmission of calibrating signal, this Oscilloscope Calibration servicing unit comprises bnc interface 10, is used for being connected with the bnc interface of oscilloprobe calibration port.
The two ends of connecting line 20 are respectively bnc interface 10 and probe linkage unit 30.Connecting line 20 is divided into ground wire and signal wire, can ground wire and signal wire be made a distinction with the line of different colours, and the connecting line here will satisfy certain frequency characteristic, and can adopt characteristic impedance is 50 ohm Shielded Twisted Pair or waveguide component.In order to prevent the external electromagnetic signal to the impact of oscilloprobe calibration, shielding processing need be done in the connecting line outside.
Probe linkage unit 30 is mainly used in being connected with oscilloprobe.To shown in Figure 5, according to the different structure form of oscilloprobe, the probe linkage unit can be selected different version such as Fig. 3.As shown in Figure 3, sensing point for oscilloprobe is needle-like, the probe ground wire adopts the situation of signal clip, the web member that is connected with signal wire in the connecting line 20 in the probe linkage unit adopts jack structure, the web member that is connected with ground wire in the connecting line 20 in the probe connector adopts contact pin structure, so that the probe of probe can inject the jack that is connected with signal wire in the probe linkage unit, the probe ground clamp can be clipped in the probe linkage unit with contact pin that ground wire is connected on, the firm connection, similarly, sensing point and ground wire for oscilloprobe all are needle-like or groove structure, the probe linkage unit also can adopt the structure of two jacks or two contact pins, guarantee in the oscilloprobe calibration process, by described alignment aid, oscilloprobe firmly is connected with the port of oscilloprobe calibration, contacts well, guarantee the accurate of probe calibration, finish smoothly.
The Oscilloscope Calibration method of utilizing foregoing Oscilloscope Calibration to assist that the embodiment of the invention provides, as shown in Figure 6, described calibration steps comprises:
Step S101: oscilloprobe to be calibrated is accessed oscillographic respective channel;
Step S102: the oscilloprobe calibration port is connected with the probe of being connected with the Oscilloscope Calibration servicing unit, wherein bnc interface 10 is used for being connected with the bnc interface of oscilloprobe calibration port, and probe linkage unit 30 is used for being connected with oscilloprobe;
Step S103: carry out oscillographic probe calibration procedure.
Before step S101, in order to guarantee oscillographic precision and degree of stability, need to be after oscillograph power on 15 to 20 minutes, operation SPC (Signal Path Calibration, signal path compensation), the error that the causes adverse effect to subsequent calibrations of avoiding drifting about.
When execution in step S101, oscillographic probe is connected to the corresponding passage of oscillograph, such as passage 1 or passage 2, can also dispose accordingly probe, as select DC OFF(to carry out the DC+AC type of calibration), be configured to 10 times of decay for 10 times of probes, namely input signal carried out 10 times of decay; Be configured to 1 times of decay for 1 times of probe.
Among the step S102, the BNC seat end that the calibration port of common oscilloprobe adopts, for making things convenient for the transmission of calibrating signal, described Oscilloscope Calibration servicing unit comprises bnc interface 10, is used for being connected with the bnc interface of oscilloprobe calibration port.
Probe linkage unit 30 by alignment aid is connected with oscilloprobe, and specifically according to the different structure form of oscilloprobe, the probe linkage unit can be selected different version.For example the sensing point for oscilloprobe is needle-like, the probe ground wire adopts the situation of signal clip, the web member that is connected with signal wire in the connecting line 20 in the probe linkage unit adopts jack structure, the web member that is connected with ground wire in the connecting line 20 in the probe connector adopts contact pin structure, so that the probe of probe can inject the jack that is connected with signal wire in the probe linkage unit, the probe ground clamp can be clipped in the probe linkage unit with contact pin that ground wire is connected on, the firm connection, similarly, sensing point and ground wire for oscilloprobe all are needle-like or groove structure, and the probe linkage unit also can adopt the structure of two jacks or two contact pins.
In step S202, also comprise the path loss values according to alignment aid, carry out the signal path loss balancing, even recording the signal path loss of described alignment aid on the 100MHZ frequency is 0.8dB, and the signal path lossy data carries out the signal path compensation accordingly.
Those skilled in the art should understand, and in the scope of appended claims or its equivalent, can make various modifications, combination, sub-portfolio and change according to designing requirement and other factors.

Claims (7)

1. an Oscilloscope Calibration servicing unit comprises bnc interface (10), connecting line (20) and probe linkage unit (30); Wherein,
Bnc interface (10) is used for being connected with the bnc interface of oscilloprobe calibration port;
Probe linkage unit (30) is used for being connected with oscilloprobe;
Connecting line (20) connects bnc interface (10) and probe linkage unit (30).
2. alignment aid as claimed in claim 1 is characterized in that, described probe linkage unit (30) adopts bipod contact pin, bipod jack or a pin contact pin to add a pin jack.
3. alignment aid as claimed in claim 1 or 2 is characterized in that, described connecting line (20) is comprised of ground wire and signal wire.
4. alignment aid as claimed in claim 3 is characterized in that, the peripheral metal mesh shield that adopts of described connecting line is processed.
5. the Oscilloscope Calibration method of a utilization such as the arbitrary described alignment aid of claim 1 to 4 comprises the steps:
Oscilloprobe to be calibrated is accessed oscillographic respective channel;
With the Oscilloscope Calibration servicing unit oscilloprobe calibration port is connected with the probe of being connected, wherein bnc interface (10) is used for being connected with the bnc interface of oscilloprobe calibration port, and probe linkage unit (30) is used for being connected with oscilloprobe;
Carry out oscillographic probe calibration procedure.
6. calibration steps as claimed in claim 5 is characterized in that, before this calibration steps also is included in and carries out oscillographic probe calibration procedure, type of calibration and the attenuation parameter of the probe of access respective channel is configured.
7. calibration steps as claimed in claim 5 is characterized in that, this calibration steps according to the path loss values of alignment aid, carries out the signal path loss balancing before also being included in and carrying out oscillographic probe calibration procedure.
CN2013102611490A 2013-06-27 2013-06-27 Auxiliary device for calibration of oscilloscope and calibration method Pending CN103364750A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107632071A (en) * 2017-08-18 2018-01-26 中车青岛四方机车车辆股份有限公司 Bolt detection means and bolt detection method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139817A (en) * 1976-09-13 1979-02-13 Tektronix, Inc. Impedance-switching connector
CN1581592A (en) * 2003-07-31 2005-02-16 日本压着端子制造株式会社 Electric connector
CN200953045Y (en) * 2006-10-13 2007-09-26 环达电脑(上海)有限公司 Oscilloprobe calibrating fitting
CN101350477A (en) * 2007-07-17 2009-01-21 王悦 Straight-pushing type connecting apparatus for probe
CN102323561A (en) * 2011-08-03 2012-01-18 刘冲 Pulse high-current amplitude calibrating device for semiconductor device test system
CN102437934A (en) * 2011-09-08 2012-05-02 株洲南车时代电气股份有限公司 Jig plate for testing signals of multifunctional vehicle bus (MVB) and wire train bus (WTB)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139817A (en) * 1976-09-13 1979-02-13 Tektronix, Inc. Impedance-switching connector
CN1581592A (en) * 2003-07-31 2005-02-16 日本压着端子制造株式会社 Electric connector
CN200953045Y (en) * 2006-10-13 2007-09-26 环达电脑(上海)有限公司 Oscilloprobe calibrating fitting
CN101350477A (en) * 2007-07-17 2009-01-21 王悦 Straight-pushing type connecting apparatus for probe
CN102323561A (en) * 2011-08-03 2012-01-18 刘冲 Pulse high-current amplitude calibrating device for semiconductor device test system
CN102437934A (en) * 2011-09-08 2012-05-02 株洲南车时代电气股份有限公司 Jig plate for testing signals of multifunctional vehicle bus (MVB) and wire train bus (WTB)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107632071A (en) * 2017-08-18 2018-01-26 中车青岛四方机车车辆股份有限公司 Bolt detection means and bolt detection method

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Application publication date: 20131023